> -----Original Message----- > From: Roper, Matthew D > Sent: Tuesday, March 17, 2015 9:35 AM > To: Konduru, Chandra > Cc: [email protected]; Vetter, Daniel; Conselvan De Oliveira, > Ander > Subject: Re: [PATCH 07/21] drm/i915: Helper function to update skylake scaling > ratio. > > On Sat, Mar 14, 2015 at 10:55:32PM -0700, Chandra Konduru wrote: > > Helper function updates supported scaling ratios based on cdclk and > > crtc clocks. > > It might be worth squashing this into patch 15, which I believe is when you > first > start using this. It's a little but harder to review new functions like this > without > the context of how/why/when they're called.
Daniel also gave similar feedback. For now, I am keeping it as is. But will follow for the next one. > > > > > Signed-off-by: Chandra Konduru <[email protected]> > > --- > > drivers/gpu/drm/i915/intel_display.c | 25 +++++++++++++++++++++++++ > > 1 file changed, 25 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/intel_display.c > > b/drivers/gpu/drm/i915/intel_display.c > > index da78e77..5591282 100644 > > --- a/drivers/gpu/drm/i915/intel_display.c > > +++ b/drivers/gpu/drm/i915/intel_display.c > > @@ -4511,6 +4511,31 @@ static void > haswell_mode_set_planes_workaround(struct intel_crtc *crtc) > > intel_wait_for_vblank(dev, other_active_crtc->pipe); } > > > > +static void skl_update_scaling_ratio(struct drm_device *dev, > > + struct intel_crtc_state *crtc_state) { > > + struct drm_i915_private *dev_priv = dev->dev_private; > > + uint32_t crtc_clock, cdclk; > > + int i; > > + > > + if (INTEL_INFO(dev)->gen < 9 || !crtc_state) > > + return; > > I wouldn't expect a skl_ function to even get called on gen<9. Or for a NULL > CRTC state to be passed in. With atomicity influx and many things going on, I am little bit cautious to make them robust. > > > > + > > + crtc_clock = (uint32_t) crtc_state->base.adjusted_mode.crtc_clock; > > + cdclk = (uint32_t) intel_ddi_get_cdclk_freq(dev_priv); > > + > > + if (!crtc_clock || !cdclk) > > + return; > > + > > + for (i = 0; i < crtc_state->scaler_state.num_scalers; i++) { > > + struct intel_scaler *scaler = &crtc_state- > >scaler_state.scalers[i]; > > + > > + scaler->min_hsr = max(scaler->min_hsr, (crtc_clock * > 100)/cdclk); > > + scaler->min_vsr = max(scaler->min_hsr, (crtc_clock * > 100)/cdclk); > > + scaler->min_hvsr = max(scaler->min_hsr, (crtc_clock * > 100)/cdclk); > > + } > > +} > > + > > static void haswell_crtc_enable(struct drm_crtc *crtc) { > > struct drm_device *dev = crtc->dev; > > -- > > 1.7.9.5 > > > > -- > Matt Roper > Graphics Software Engineer > IoTG Platform Enabling & Development > Intel Corporation > (916) 356-2795 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
